Another day of polling and another day of bad news for Mitt Romney. According to a new set of NBC/WSJ/Marist polls of likely voters, President Obama leads in the three biggest swing states -  Florida, Ohio and Virginia. In all three state Obama’s lead is outside of the polls’ 3.1% margin of error.

Ohio
Marist (9/9-11)
Barack Obama 50%
Mitt Romney 43%
Other 1%
Undecided 6%

Florida
Marist (9/9-11)
Barack Obama 49%
Mitt Romney 44%
Other 1%
Undecided 5%

Virginia
Marist (9/9-11)
Barack Obama 49%
Mitt Romney 44%
Other 2%
Undecided 5%

Besides showing Romney losing in the three biggest swing states these polls contain more bad news for him. In all three states Obama is now basically tied with Romney on the question of who would better handle the economy. Obama has a four point advantage on the economy in Ohio among likely voters, is tied in Virginia and trails Romney by only one point in Florida. Since Obama holds a big advantage on other issues, if he can just remain close to Romney on the economy, he will be in good shape.

The biggest problem for Romney is that Obama already holds a large advantage in the electoral college. If Obama wins just one of these three big swing states he will likely get re-election, but for Romney to get to 270 he needs to win all three.